<!DOCTYPE html>
<html>
    <head>
        <title>Example</title>
    </head>
    <body>
        <!-- ISO语言代码 -->
        <p lang="en">Hello - how are you?</p>
        <p lang="fr">Bonjour -comment etes-vous?</p>
        <p lang="es">Hola - como estas</p>
    </body>
</html>